1 Samuel 17:39

Context
17:39 David strapped on his sword over his fighting attire and tried to walk around, but he was not used to them. ¹  David said to Saul, “I can’t walk in these things, for I’m not used to them.” So David removed them.

1 Samuel 27:11

Context
27:11 Neither man nor woman would David leave alive so as to bring them back to Gath. He was thinking, “This way they can’t tell on us, saying, ‘This is what David did.’” Such was his practice the entire time ²  that he lived in the country of the Philistines.